Performance lacking

[brightness 12]

Hi folks,

I'm currently suspecting that clients lowframe rate or stuttering happening due of server since it stops when we play on others as the server fps is mainly stuck on 25 fps (Would improve if I had headless client working).

Anyways, we're currently using these specs for our dedi:

HP ProLiant DL 320e

Intel® Xeon® E3-1230 v2, Quad-Core

16 GB DDR3 RAM

2x 2,000 GB SATA II HDD; 7.2k (I turned it into a raid 1 so hence it being 2TB only).

Server configuration:

MinBandwidth=131072;
MaxBandwidth=2147483647;
MaxMsgSend=256;
MaxSizeGuaranteed=512;
MaxSizeNonguaranteed=256;
MinErrorToSend=0.001;
MinErrorToSendNear=0.0099999998;
MaxCustomFileSize=9000;
Windowed=0;
language="English";
adapter=-1;
3D_Performance=8021;
Resolution_W=160;
Resolution_H=120;
Resolution_Bpp=32;
serverLongitude=-90;
serverLatitude=39;
serverLongitudeAuto=-90;
serverLatitudeAuto=39;

Notice: These settings worked for our AMD Opteron 8 cores server before until we decided to move to a stronger core server.

Also, while i'm posting this:

I'm currently getting errors while launching headless (Bad key given during setup, ideas? Its steam downloaded).